Menendez: On Immigration, McCain "Walked Away."

One of Congress' most influential Hispanic members says that John McCain "walked away" from the Latino community and is not a "person of principle" on immigration reform -- a perception that could haunt the Arizona Republican in the general election.

In an interview with The Huffington Post, Sen. Robert Menendez offered a scathing rebuke of McCain, painting him as a candidate who sold his political soul to secure his party's presidential nomination.

"In my mind, he has dramatically shifted. He has really taken a Republican tact," said the New Jersey Democrat. "It seems to me, and it is out there in the community, that he walked away at a critical time. And when you take that view, which shows that he is not the person of principle that he would like to show himself being, and you wear the Republican mantle that is so negative and anti-immigrant... I think it is very hard for John McCain to make hay with Latinos at the end of the day."